| 释义 |
underdrain美 ['ʌndəˌdreɪn] 英 ['ʌndə'dreɪn] - n.暗渠
- v.用暗渠排去(…处)的水
- 网络暗沟；地下排水管；地下排水道
过去分词：underdrained 现在分词：underdraining 第三人称单数：underdrains n. | 1. an underground drain or system of drains on agricultural land | v. | 1. to equip an area, especially cultivated land, with a system of underground drains |
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